The editorial team greatly appreciates the reviewers who have dedicated their considerable time and expertise to the journal’s rigorous editorial process over the past 12 months, regardless of whether the papers are finally published or not. In 2019, a total of 60 papers were published in the journal, with a median time to first decision of 20.5 days and a median time from submission to publication of 42.5 days. The editors would like to express their sincere gratitude to the following reviewers for their generous contribution in 2019:
| Abdelhamid, Elaissari | Loránd, Románszki |
| Aditya, Khair | Lu, Yu |
| Adrian P., Defante | Luca, Medda |
| AJIT, DHAMDHERE | M, Naushad |
| Alexandra, Szczes | M.A., Hasnat |
| Ali, Telmadarreie | Marek, Kosmulski |
| Allatchi, Hassan Barkai | Mariana, Buranelo Egea |
| Amor M., Abdelkader | Marta, Krasowska |
| Ana P., Ramos | Megan, C. Frost |
| Andrzej, Bartnicki | Meichun, Li |
| Antonio, Nanci | Michael, Renz |
| Antonio, Perazzo | Milan, Kragović |
| Apostolos, Kantzas | Miryana, Hémadi |
| Aristotelis, Xenakis | Mohammadali, Ahmadi |
| Barbara, Jachimska | Monika, Rojewska |
| Carlos, Colosqui | Myroslav, Sprynskyy |
| Cheng, Wang | Nan, Li |
| Chi, Zhou | Natalia, Ivanova |
| Conrad, Ingram | Natan, Osterman |
| Davood, Toghraee | Nina, Kovalchuk |
| Declan, Devine | Nitesh, Mittal |
| Diego Andrés, Vasco-Calle | Nuria, García |
| Dmitry, Zimnyakov | Paul E., Lammert |
| Dongxiang, Zhang | Pierre, Bauduin |
| Dragana, Kopitar | Plamen, Tchoukov |
| Dunja Šajn, Gorjanc | Prasad, Raut |
| Edgar, O’Rear | Qiuquan, Guo |
| Eduardo Garcia, Breijo | Ramón G., Rubio |
| Eduardo, Guzmán | Rasim, Alosmanov |
| Enshirah, Da’na | Reinhard, Miller |
| Eugene V., Aksenenko | Rongjun, Zhao |
| Eva, Schieferstein | Rui, Xiao |
| Ewa, Kaczorek | Ruzhu, Wang |
| Fawzi, Banat | Sadegh, Yazdi |
| Francesco, Bottiglione | Saeed Zeinali, Heris |
| Francesco, Lopez | Saule, Aidarova |
| Frank, Heberling | Sergey, Dvinskikh |
| Fuying, Ma | Sergio, Caserta |
| Gabriela, Kamińska | Shuao, Wang |
| Garima, Thakur | Shu-Chuan, Liao |
| Gijsbertus, De With | Sicelo, Goqo |
| Giovanni, Li-Destri | Simoni M.Plentz, Meneghetti |
| Giuseppe, Loglio | Slavka, Tcholakova |
| Gregor, Trefalt | Spencer, Taylor |
| Gujie, Qian | Stuart Matthew, Clarke |
| Hamid, Vatanparast | Taishi, Kobayashi |
| Hassan, Dashtian | Tajana, Begović |
| Henryk, Grajek | Takahiko, Miyazaki |
| Hongli, Zhu | Tatiana, Gambaryan-Roisman |
| Hua, Wei | Tatyana, Rakitskaya |
| Hua, Wu | Thodoris, Karapantsios |
| Hyo-Jick, Choi | Thomas, Gutberlet |
| Ian, Hartley | Tiantian, Kong |
| Ioannis G., Roussis | Tien Duc, Pham |
| Ivan, Lesov | Titus, Sobisch |
| Iwona, Rykowska | Tomasz, Bajda |
| James K., Ferri | Tugce, Senturk Parreidt |
| János, Kiss | Tuo, Ji |
| Je Hoon, Oh | Udayabhanu, Jammalamadaka |
| Jenu Varghese, Chacko | Víctor, Quezada |
| Jeong Young, Park | Victor, Starov |
| Jiuxu, Liu | Vladimir M., Gun’ko |
| Joanna, Pawłat | Volodja, Kovalchuk |
| Joanna, Raczkowska | Wilhelm R, Glomm |
| Johannes, Lützenkirchen | Xiaoyang, Shi |
| John, Webster | Ying-Chih, Liao |
| Jonathan Edward, Stringer | Yiqun, Fan |
| José Alejandro, Heredia-Guerrero | Yoshinao, Nakagawa |
| Julio, Bastos | Younjin, Min |
| Kallol, Pradhan | Yu, Tian |
| Kelsey, Hatzell | Zaneta, Swiatkowska |
| Krzysztof, Moraczewski | Zhichao, Dong |
| Lianshe, Fu | Zhongqing, Ma |
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